NOTE: Rail productivity data are only available
through 1999. Source data are indexes with base years of 1987 (rail) and 1996
(business). They have been reindexed so that 1990 = 100.0

SOURCE: U.S. Department of Labor, Bureau of Labor
Statistics. Business sector-"Multifactor
Productivity Trends," table 1. Rail-"Industry Multifactor Productivity Data Table by
Industry, 1987-1999." Both
available at http://www.bls.gov, as of February 2003